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A Phoenix boy is in the hospital after his mother's boyfriend allegedly broke his bones and pulled out his hair. Phoenix police report that on Wednesday, they arrested 25-year-old Steven Darrell Nelson at his home near 7th Street and Union Hills Drive. Three weeks earlier, a 4-year-old boy who also lives at Nelson's home was taken to the hospital with multiple life-threatening injuries. Pediatricians at Phoenix Children’s Hospital report that the child had a broken arm, broken leg, lacerated liver, bowel perforation, "multiple areas of hair loss from hair being pulled out by the roots," and bruising throughout his body.The boy has been hospitalized for the past three weeks, and allegedly told police, "Steven hurt me." Upon his arrest, Nelson reportedly told police that they were playing when the injuries occurred, and, "he hoped that one day they could be friends."  926

A subject coughing in a cyclic incident. Top view of airborne droplet transmission with and without wearing a surgical mask. The top and bottom figures show the results at 4 s and 5 s, respectively. We consider a surgical mask that exhibits an initial efficiency of ～91%. The cover does not prevent the transport of the saliva droplets entirely away from the subject. Many droplets penetrate the mask shield and some saliva droplet disease-carrier particles can travel more than 1.2 m. For visualization, the droplets were scaled by a factor of 600 compared to their actual size. The environmental conditions are zero wind speed, ambient temperature 20 °C, pressure 1 atm, and relative humidity 50%. The mouth temperature is 34 °C, and the face skin temperature is 32 °C. 779

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.The object, nicknamed 'Oumuamua, meaning "a messenger that reaches out from the distant past" in Hawaiian, was first discovered in October 2017 by the Pan-STARRS 1 telescope in Hawaii.Since its discovery, scientists have been at odds to explain its unusual features and precise origins, with researchers first calling it a comet and then an asteroid, before finally deeming it the first of its kind: a new class of "interstellar objects."Now, a new paper by researchers at the Harvard Smithsonian Center for Astrophysics raises the possibility that the elongated dark-red object, which is 10 times as long as it is wide and traveling at speeds of 196,000 mph, might have an "artificial origin.""'Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," they wrote in the paper, which has been submitted to the Astrophysical Journal Letters.The theory is based on the object's "excess acceleration," or its unexpected boost in speed as it traveled through and ultimately out of our solar system in January 2018."Considering an artificial origin, one possibility is that 'Oumuamua is a light sail, floating in interstellar space as a debris from an advanced technological equipment," wrote the paper's authors, suggesting that the object could be propelled by solar radiation.The paper, written by Abraham Loeb, professor and chair of astronomy, and Shmuel Bialy, a postdoctoral scholar, at the Harvard Smithsonian Center for Astrophysics, points out that comparable light-sails already exist on earth."Light-sails with similar dimensions have been designed and constructed by our own civilization, including the IKAROS project and the Starshot Initiative. The light-sail technology might be abundantly used for transportation of cargos between planets or between stars."In the paper, the pair theorize that the object's high speed and its unusual trajectory could be the result of it no longer being operational."This would account for the various anomalies of 'Oumuamua, such as the unusual geometry inferred from its light-curve, its low thermal emission, suggesting high reflectivity, and its deviation from a Keplerian orbit without any sign of a cometary tail or spin-up torques."'Oumuamua is the first object ever seen in our solar system that is known to have originated elsewhere.At first, astronomers thought the rapidly moving faint light was a regular comet or an asteroid that had originated in our solar system.Comets, in particular, are known to speed-up due to a process known as "outgassing," in which the sun heats up the surface of the icy comet, releasing melted gas. But 'Oumuamua didn't have a "coma," the atmosphere and dust that surrounds comets as they melt.Multiple telescopes focused on the object for three nights to determine what it was before it moved out of sight. 3063

A video recently released shows a school bus getting swept away by floodwaters in Texas.The incident happened Oct. 16 near Austin after a driver drove past a barricade and attempted to cross a flooded area.The bus gets caught up in the water and floats down a creek before the driver completely loses control.A 12-year-old student was a passenger on the bus as it finally came to rest on the side of a few trees.Emergency responders rescued the driver and the student.Officials report the driver has since been fired and is facing charges. 552

A viral video showing security camera footage taken in Chula Vista, California on Halloween night may help restore your faith in the honor system. Kim Manalo's family joined the throngs of trick-or-treaters racing door-to-door in their neighborhood.  Manalo wanted to keep the spirit of Halloween alive at her home while they were out, so she left a bowl filled with candy outside their door with a note asking people to help themselves.  Her hope was that people would leave a treat for the next candy-seeker."We came home to an empty bowl and hoped there weren't greedy kids that didn't leave some behind for others," Manalo wrote on her post.She studied security footage to see if perhaps someone grabbed more than their share of goodies. What Manalo found on her security camera video was a surprise that almost made her cry."Instead we found this clip of a wonderful soul who shared some candy from his own bag to keep the halloween spirit going for other kids," Manalo she wrote.The video shows one of the boys reach into his bag and place some of his own candy in the bowl for the next trick-or-treaters. “He didn't even know the camera was there,” Manalo said. “None of his friends knew and to take that second out of his time from his own stuff just really warmed my heart.”San Diego-based KGTV posted the surveillance video on Facebook after Manalo's friend shared the footage with reporter Joe Little.  The video has garnered hundreds of reactions, shares, and comments."If only all of us raised our children to be so thoughtful even when no one is seemingly looking. He will change the world someday if he keeps it up," wrote Jeremy Ellis.The identity of the thoughtful boy remains a mystery, but numerous adoring Facebook fans are looking for clues to thank him for inspiring the spirit of community. 1941